Valve.



N. E. woons.-

VALVE. v

APPIICATION FILED APR.20. 1914.

1,156,963.. Patented ont. 19, 1915.

Cima/1,..

NORMAN n. woons, or R1cn1vroNn, vIne1NIe.

Vinrivii.` Y l Y 1,156,963. Specification of Letters Patent. PMJQDYQCTOCQ, 1915.. Appiieation medew-i120, 1914. serialno. 833,171.'

To all y107mm it 'may concern:

f Be it known that I, NORMAN'FJ. VVooDs, a citizen of the UnitedStates, residing at Richmond, in the countyv of Henrico and State of Virginia, have invented a new and useful Valve,fof which the following is a specification. v

This invention relates to an improvementv in valves, the objects being to provide a valve designed forl use in connectionV with any fluid, as for example, air, gas, water,V steam, &c., Yand so vconstructed as to thoroughly and eifectually strain'the same and free it from all foreignzmatter, and to adapt said valve to be self cleansing and capable of discharging such foreign matter collected therein to one side and out of the course of Y said liquid.

` Other minor objects of the invention will hereinafter appear and the'novel features of the invention will be specificallypointed out in the appended claims.

VReferring to the drawings: Figurel is a central vertical longitudinal sectional view of a valve embodying my invention, vthe valve being open. Fig. 2 is a central horizontal longitudinal sectional view Vof the same, the parts being in the same position. Fig. 3 is a view similar to Fig. 2, the valve being in the act of self-cleansing. Fig. 4 is also a view similar to Fig. 2, the valve be-` ing closed or in its'cut-OE position. Fig. 5 is a portion of the valve in plan, thewall-of the valve being broken away. Fig. 6 are details in bottom plan and side elevation of the toothed washer. Fig. 7 is a detail in plan of the valve operating lever or handle.

Similar numerals of f reference indicate similar parts in all the figures of the draw-r ing. l i p The valve-casing or shell 5, may have any external appearance or design desired and` best-adapting it'for the purpose intended'.- At its opposite longitudinal .ends it is provided with inlet and outlet-openings V,orf passages, 6 and 7, respectively, the same be#v ing suitably threaded and designed to form proper connections with-the usual supply and discharge. The -casingor shell is furthermore provided with a vertically disposedV transverse` bore 8, tapered slightly from its lower end upwardly and extending through and through the casing. The lower end of this bore is internally threaded and is closed by a removable plug-cap 9. The

' upper side of thisrcap is provided with achamber 10, and the underside with an eX-fV ternal wrench-receiving projection or surface 11. Neatly fitted within the tapered bore 8 ofthevalVe-casing or shell and capable of rotating therein, is a correspondingly tapered valve-plug 12. This plug' terminates at its lower end a slight distance above the plug-cap 9 and at its upper end above theyalve-oasing or shell, at.. which point it is squared, as at 17, toreceive the socket-*head 13 of the-operating handle or lever 14, afpin Vbeing preferably used to connect these parts removably. together. The upper surface of the valve-casing or shell, immediately surrounding the valveplug, is 'providedwith la seriesofinolined ratchet-teeth 16, in vthis instance, siX in number, the same jbeingdesigned to Vbe successively engaged by a. tooth l15, depending` from awasher 21, encircling, mountedupoinp and moving with the valve-plug and operating-handle. l By this means, it ,willV be ap-` parent that the valve-,plug can only be rotated in one directionthe object of which will-be hereinafter apparent. Thevalve-V plug, as is usual, isprovided with the transverseports 22 and 23, the saine being elongated andeach capable of being alined with the vplu-g having( an enlargement or flange 27 at its'lower end designed to fit in the enlarged, i opening 25 of the bore of the-valvefplug. Y

Seated within the 'chamber 10 of the. plug- .cap Q and bearing upwardly against the flange 27 of the plug, 26, so as to retainthe latter in positiongi's a coiled spring 28. A cylindrical strainer of proper mesh, and indicated as 29, isvseated over the. plug 26, eX-l tends upwardly through the bore 24 of" the valve-plug and yterminates inthe seat 26". The lower end Ofthis'strainer may be flared, as indicatedat 29a, to fit over the flange '27j of the plug 26, and be clamped by said flange flange of thestrainer may be left disconlOC nectedffrom the plug, or as shown, pinned Y.

and the lower end of the valve-plug. This J1 thereto, the object being to cause the strainer to move with the valve-plug, all as will hereinafter appear. rilhe strainer is of a diameter very slightly smaller than the bore of the valve-plug in which it fits, so that it completely fills the same and eectually covers the inner ends of the ports 22 and of the valve-plug so as to prevent foreign matter passing beyond the port and entering the plug. At an angle to the longitudinally disposed inlet and outlet-openings 6 and 7 oi the valve-casing, the latter is provided at one side with a discharge port or opening 29h, communicating at its inner end with the bore of said valve-casing and therefore being Vin line with the ports thereof and those of the valve-plug. A curved passage 30, communicates with the bore of the valveA casing at a point diametrically opposite the point of communication of the dischargeport or o aening 29h, and extends rearwardly and communicates at its other end with the inlet-port 6 of the valve-casing.

This completes the construction of the improved valve and the operation thereof may be briefly stated as follows: Taking the parts in the positions shown in Figs. l andV 2, it will be seen that any liquid entering the inlet-passage or port 6, will pass through the ports 22 and 23 of the valveplug and also through the strainer 29, and thence out through the discharge-port 7 of the valve. Bv passing through the strainer the liquid will be freedv from all foreign mattei', and the latter will collect at the back of the strainer in the port 23 of the valve-plug. New by operating the handle 14 the distance of one tooth of the ratchet 16, the valveplug and its strainer will be partially rotated, the parts being thereby brought to the position shown in Fig. 3. lVhen this occurs, it will be seen that the port 23 of the valve-plug will be in line and communication with the discharge-outlet 29h and the port 22 of the valve-plug in line and communication with the side port 30, the inlet and outlet-ports of the valve proper' being closed. ln this manner a discharge of the liquid is directed through Athe side-port 30, the ports 22 and 23 and the discharge port 29", the foreign matter lying within the port 23 being blown or discharged out the port 29h. A. further movement of the' operating handle and the valve-plug the distance of one tooth will bring the parts to the position shown in Fig. d, wherein all the ports are closed. Again, by the further movement of the handle the distance of a tooth, the valve is opened, as in Fig. 2. in this manner, each time that the valve is closed after use, the strainer is cleansed` of all foreign matter before the closing opera- Copies of this patent may be obtained for tion can take place and before the valve can again be opened, and when opened a cleaned side of the strainer is always presented to the discharge side of the casing. Strainers may be removed and new strainers inserted when occasion requires' simply by removing the plug-cap 9 and withdrawing the strainer and its supporting plug. lt will be noted that the exhaust or clearance-port 29b is disposed at an angle rearward, such being the result of the presence of an extended lip or guard 29. By this arrangement the strai Aer is guarded against puncture or injury when the valve-plug is turned so as to discharge through the said port 29h.

Having described my invention, what l claim is:

l. A valve of the character described comprising a casing having inlet, outlet and eX- aust ports, a manually operable rotary plug valve in said casing provided with a central longitudinal passage for cooperation with said ports, a screen itted in said passage so as to provide pockets on opposite sides of the valve and screen, and means for permitting rotation of the valve in one direction and holding the valve against rotation in the opposite direction.

2. A valve of the character described con prising a casing having inlet, outlet and exhaust ports, a manually operable rotary plug valve in said casing provided with a central longitudinalpassage for coperation with said ports, a circular screen fitted in said passage concentric with the axis of the valve so as to provide pockets on opposite sides of the valve and screen, and means for permitting rotation of the valve in one direcw tion and holding the valve against rotation in the opposite direction.

3. ln a valve of the character described comprising a casing having inlet, outlet and exhaust ports, a manually operable rotary plug valve in said casing provided with a central longitudinal passage for cooperation with said ports, a screen fitted in said passage so as to provide pockets on opposite sides of the valve and screen, and means for permitting rotation of the valve in one direction and holding the valve against ro tation in the opposite direction, the said haust port being provided with a guard portion rendering said port of angular' form so as to prevent the introduction of an implement whereby the screen may be perforated. ln testimony whereof, l have signed my name to this specification in the presence of two subscribing witnesses.

' i NORli/IAN E. WOODS.

ln thevpresence of- MURRAY M. McGUiRn, HENRYVC. RIELY.

five cents each, by addressing the Commissioner of fatents,

Washington, D. C. i 

